Machine for molding glass articles



Jan. 6, 19412. ALLEN 2,269,391

MACHINE FOR MOLDING GLASS ARTICLES Filed April "7, 1959 1a Sheets-Sheet' 2 CUTO FF KNIFE DROP Z2. GAlleayz INVENTOR.

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Jan. 6, 1942. R. G. ALLEN- MACHINE FOR MOLDING GLASS ARTICLES 18 Sheets-Sheet 5 Filed April 7, 1939 MON- Ito auuz n 2. G.A,Zlen

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Jan. 6, 1942. R, s. ALLEN 2,269,391

MACHINE FOR MOLDING GLASS ARTICLES Filed April 7,. 1959 ls sheets-shee t 4 b1 CAM INVEN TOR.

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NECK MOLD'CAI'I Jain. 6, 1942. R. s. ALLEN MACHINE FOR MOLDING GLASS ARTICLES Filed April 7, 1959 18 Sheets-Sheet 5 R .G. Allen INVENTOR.

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Jan. 6, 1942.- G. ALLEN MACHINE FOR MOLDING GLASS ARTICLES Filed April 7, 1939 18 Sheets-Sheet 6 n ll! R GAllgn IN V EN TOR.

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R. G. ALLEN MACHINE FOR MOLDING GLASS ARTICLES Jan. 6, 1942;

Filed April 7, 1939 18 Sheets-Sheet 7 n R Am, N m G1 A 1942- R. G. ALLEN 2 :2 69,391

MACHINE FOR MOLDING GLASS ARTICLES Filed April '7, 1939 l 8 Sheets-Sheet 8 pfiiflllen INVENTOR.

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Jan. 6, 1942. R. ca. ALLEN v MACHINE FOR MOLDING GLASS ARTICLES 18 Sheets-Sheet 9 Filed p il 7, 1959 fl/ ///V// 1 0 6 4 I 6 e L 2 a B y 1A 1 o o o h I C o J I 0 a 0 0 a W m 1 a o H I Q o o I i [H a 0 0 I 1 ,Z.J 2 3 E, a p v 4 i 4 .o|| 11o 1: 0 2 1 2 2 2 MW 2 w v M 4 1 G .Allen,

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Jan. 6, 1942. R. G. ALLEN MACHINE FOR MOLDING GLASS ARTICLES- 18 Sheets-Sheet 11 Filed April 7, 1939 B. G. Allen INVENTOR.

ATTORNEYS. 4

' Jan. 6, 1942. R. G. ALLEN MACHINE FOR MOLDING GLASS ARTICLES Filed April 7, 1939 18 Sheets-Sheet 12.

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Jan. 6, 1942." R. G. ALLEN 2,269,391

MACHINE FOR MOLDING GLASS ARTICLES Filed April 7, 1939 18 Sheets-Sheet l3 DIP HEAD CUT OFF I? CUTOFF LANK MOLD OPENING FINISHING MOLD CLOSING ,lfff'g .46.

12. GAllen 296 L IN VEN TOR.

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Jan. 6, 1942.

R. a. ALLEN MACHINE FOR HOLDING GLASS ARTICLES 18 Sheets-Sheet 14 Filed April 7, 1939 1942- R. G ALLEN MACHINE'FOR MOLDING GLASS ARTICLES Filed April '7, 1939 18 Sheets-Sheet l5 1 W 6. 6 cap 4 2 3 W Z A TTORNEYS.

. 1942- G. ALLEN 2,269,391

MACHINE FOR MOLDING GLASS ARTICLES Filed April 7, 1939 18 Sheets-Sheet l6 NGER E. G .All/en INVENTOR.

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Jan. 2- R. G. ALL N 2,269,391

MACHINE FOR MOLDING GLASS ARTICLES Filed April 7, 1959 18 Sheets-Sheet l7 CUT-OFF CLAMP PLUNGER III.

ATTORNEYS. h

Jan. 1942.

R. G. ALLEN MACHINE FOR MOLDING GLAS'S ARTICLES Filed April 7, 1939 18 Sheets-Sheet 18 IN VEN TOR.

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Patented Jan. 6, 1942 OFFICE MACHINEFOR MOLDING GLASS ARTICLES Russell Allen, Alton, IlL, assignor to Owens- Illinois Glass Company, a corporation of Ohio Application April 7, 1939, Serial No. 286,627

Claims.

My invention relates to adjusting mechanism for adjustably regulating, timing, controlling and synchronizing the various operations or steps in the operation of automatic glass blowing machines or other mechanisms. The invention as herein illustrated is particularly adapted for use with and as forming a part of an Owens type machine for blowing hollow glass articles, in which charges of glass are introduced by suction into parison molds and thereafter the parisons are transferred to finishing molds in which they are blown to the form of} finished articles.

Conventional machines of this type comprise a mold carriage rotating continuously about a. vertical center column and a plurality. of heads or units arranged in an annular series on the carriage. Each unit may comprise a body blank mold and a neck mold in register therewith, together forming a parison mold which is periodically brought over a pool of glass as the carriage rotates, a dip head on which the pari'son mold is carried, means for lowering the dip head to bring the mold into contact with the pool of glass for gathering its charge and for then lifting the dip head, a plunger which is projected into the parison mold and forms an initial blow opening in the parison, a swinging knife for severing the charge of glass when the mold is lifted, means for blowing the glass within the blank mold, and means for opening and closing the blank mold and neck mold. Associated with each blank mold is a finishing mold and its carrier, mounted on the mold carriage, and mechanism for lifting and lowering the finishing mold, for closing it about a parison, and for blowing the parison within the finishing mold.

A machine of this type is adapted for making hollow glass articles in a great variety of shapes and sizes as the molds are interchangeable, permitting the use of molds corresponding to the particular articles to be formed therein. In order to obtain were of high quality, it is important to provide adjustingmeans individual to the various operating cams or other devices, for individually adjusting the time at which the various operations-take place. The patent to Allen et al., 1,981,937, November 27, 1934, discloses a machine automatic safety switches to control the limits of of the type above indicated comprising many such adjustment features. The present invention involves various features of novelty in the nature of improvements over what is disclosed in said patent.

In a machine of the type herein illustrated the various operations are controlled in the main by stationary cams adjustable circumferentially of adjustment of various cams relative to each other in a manner to prevent interference of the mech- :anisms controlled thereby.

Other objects of the invention will appear hereinafter.

Referring to the accompanying drawings: Fig. 1 is a fragmentary sectional elevation of an Owens type machine for blowing hollow glassware, constructed in accordance with the present invention;

Fig. 2 is a part sectional plan view showing the cam plate and cams controlling the swinging movements of the knife and the knife drop,

and also showing a clamping mechanism for the cam which controls the knife swing;

Figs. 3, 4, 5 and 6 are sectional views taken at the correspondingly designated lines on Fig. 2;

Fig. 7 is a bottom plan view of the cam plate shown in Fig. 2, with the plunger operating cam mounted thereon;

Figs. 8, 9 and 10 are sectional views taken at the correspondingly designated lines on Fig. 2;

Fig. 11 is a plan view showing the dip cam which controls the up and down movements of the dip head;

Figs. 12 to 17 are sections at the correspondingly designated lines on Fig. 11;

Fig. 18 is a bottom plan view showing the neck mold cam which controls the opening of the neck mold;

Figs. 19 to 23 are sections at the correspond-- ingly designated lines on Fig. 18 but in noninverted'position;

' Fig. 241s a bottom plan view of the blank mold, cam plate and cam controlling the opening of the blank mold; I

Figs. 25 to 28 are sections at the correspondingly designated lines on Fig. 24 but in non-1nverted position;

Fig. 29 is a bottom plan view of a cam plate with the finishing mold cam for opening and 0105. ing the finishing mold mounted thereon;

Figs. 30 to 33 are sections at the correspond- A further object of the invention is to provide plunger is mounted on the under surface of the cam plate 1I and is adjustable by mechanism including a rack I69 attached to the cam and driven bygearlngincludingagear III andworm III a shaft 2.

Referring to Fig. 11, the cam plate 19 has by worm gearing including a worm wheel H6 and a worm II1, the latter carried on a shaft II8 driven as hereinafter described. The cam section H4 is driven in a similar manner through gearing including a rack II9, gear I28, worm HI, and shaft I22. In order to maintain the continuity of the inner wall of the cam track between the adjacent ends of the cam sections, a plate I25 (Figs. 11 and 17) is provided. Said plate has slot and pin connections with the cam sections H3 and H4, including pins I26 on the section I25, engaging slots I21 in the cam sections H3 and II4. Such connections permit a limited adjustment of either cam relatively to the other.

The blank mold opening cam 69 is mounted on the under side of the cam plate 68 as shown in Fig. 24 andis adjustable by mechanism including a rack I28 and a pinion I29, the latter driven by worm gearing including a worm I38 on a shaft I3I.

The neck molds, which are in registerwith the body blank molds and hold the parisons while the blank molds are opened and until after the finishing molds enclose the blanks, are opened to disengage the blanks by an additional inward movement of the cam roll 83 (Fig. 1) beyond the blank mold opening position. Such movement of the cam roll for opening the neck molds is controlled by a cam section I32 (see Figs. 18 to 23) which cooperates with the blank mold opening cam substantially as set forth in detail in the above noted patent to Allen-et al., 1,981,937. The mechanism for adjusting the neck cam I32 includes a sprocket chain I33 which at its opposite ends is connected to the ends of the cam I32, the sprocket chain being trained over a driving sprocket I34 and an idler sprocket wheel I35, the chain intermediate the sprocket wheels being supported and guided by arc-shaped walls or flanges formed on the cam plate 88 and extending circumferentially of the machine; In order to fill in the gap in the outer cam wall section as the cam section I32 is adjustably moved to the left, a cam wall extension chain I36 is attached to the cam and guided into position to fill in the gap. A take-up device (Figs, 18 and 23) is provided for taking up slack in the sprocket chain I33 and adjusting the tension thereon. Said device hereinafter.

includes an adjusting rod I31 connected to a bearing block I38 in which the shaft for the sprocket gear I35 is journalled, said bearing block mounted in guideways permitting such adjustment. The rod I31 is screw-threaded to receive adjusting nuts which engage a bearing lug I39 through which the rod extends. Means for driving the sprocket chain I33 includes'a shaft I48 (Fig. 18) having a driving connection, through a worm HI and worm wheel I42, with the driving sprocket I34.

The cams controlling the opening and closing movementsof each finishing mold (see Fig. 29)

adjusting the cam section I44, power mechanism.

is provided operating through a train and gearing including a shaft I46, a worm I41, a worm gear I48, a, pinion I49 on the worm gear shaft, and a gear I50 which drives a rack I5I attached to the cam I44.

Referring to Figs. 34 to 39, the cam for lifting the finishing mold carrier includes the cam patch 65 adjustably mounted on the cam plate 64. The motor for adjusting the cam operates through a train of gearing including a shaft I53, worm I54, and worm wheel I55, the iatter mounted on a shaft I56 (Fig. 38) carrying a pinion 51 which engages a rack I58 on the cam section. 4

The mechanism for selectively adjusting the various cams will now be described. Such mechanism, illustrated in Figs. 46 to 47 inclusive, comprises an annular series of adjusting units mounted in part in the gear case I66. Each said unit includes a driving spindle (designated I6I with exponents a to 7" added to designate the individual spindles) each spindle having driving connections with a corresponding cam or cams as pointed out Selecting mechanism is provided by which any selected one of said units may be connected through power transmission mechanism to a cam adjusting electric motor I62 for driving the selected unit.

Each of the driving units includes an adjusting gear I63 (Figs. 42, 43) journalled on the spindle I6I, and a sleeve I64 having a fixed mounting in the gear case. A clutch member I65 splined on the shaft I 6| for up and down movement, when lowered provides a driving connection between the gear I 63 and the shaft. When the clutch member is moved upward it releases the gear I63 and looks with the sleeve I64, thereby holding the spindle against rotation.

Means for selectively operating the clutch members includes a selector cam I61 formed with a cam track I68 to receive cam rolls carried on bell cranks I69. One arm of each bell crank is connected to a clutch member I 65 for moving the latter up and down. The two arms of the bell crank are mounted for relative rotation with an interposed spring I18 providing a yielding connection therebetween. The selector cam is so designed that as it rotates, the bell cranks I68 are operated in succession and thereby connect the driving spindles I6I singly and in succession with their driving pinions I63.

The selector cam I61 is driven by an electric motor "I (Figs. 41, 42) which operates through speed reduction gearing including a worm I12 on the motor shaft and a worm gear I13, to drive a Geneva gear I14. The driving member I18 for the Geneva gear may be mounted on the shaft of the worm gear I13. The gear I14 is mounted on a shaft I 16 operating through beveled gears I11 and I18 to drive a shaft I19 on which the selector cam I61 is mounted. When the electric motor I is running, it operates through the gearing just described to impart intermittent step by step movement to the selector cam, each step movement operating one of the clutches so that the driving spindles I6I are connected singly and in succession to their respective driving gears I63.

Mechanism for transmitting motion from the motor 562 to the spindles iti includes a shaft ltd on which is mounted a sprocket wheel 'i8l drivenby a sprocket chain i812 (Figs. 41 and 42) which in turn is driven by the motor 862 operating through suitable speed reduction gearing. A bevel pinion I83 on the shaft 8% drives a gear i841 on a shaft I85 journalled in the lower wall of the gear case. A sun gear lat keyed to the shaft I85 meshes with an annular series of transmission gears l8'l see Fig. 43), each of said gears lill meshing with two of the driving gears Hill. It will be seen that with thisarrangement the motor 62 operates to drive all of the gears ltd simultaneously, but only one of the drivin spindles is connected at any time toits driving gear lad.

' Indicator mechanism (Figs. 54 to 56) is provided for use with the cam selecting mechanism and also to indicate the position to which the various cams have been adjusted. Such mechanism includes a dial Hill having printed on its face legends I98 or other indicating means cooperating with a pointer I92 for indicating which cam is operatively connected with the motor 562. The pointer is carried on a flexible shaft W3 (Figs. 55, 40 and 47). The. shaft W3 has driving connection through bevel gears and H95 with the shaft M9 on which the selector cam ltl (Fig. 42) is mounted. When the selector motor l'il is started, as by depressing a push button in the control circuit of the motor, the pointer m2 is rotated, and when it indicates the selected cam, the push button is released, leaving the selected cam operatively connected with the cam adjusting motor R62. The motor lii has a biiiake that stops rotation when the current is o 7 The means for indicating the position to which each cam is adjusted, includes a series, of disks 698 (Figs. 55 and 56') mounted for rotative adjustment on a shaft i'99 supported in the indicator frame roe. Each disk H98 has mounted on its periphery a band 2M with scale markings or other indicia. A window 202 in the front wall of .the' indicator frame exposes the scale markings to view. A name plate 202 extending along the window is provided with names opposite the bands 2m to designate the corresponding cams. A rod 203 positioned in front of the scales provides a base line to accurately indicate the rotative position of the disks H98. Each of the indicator wheels or disks is formed with an annular gear 28% engaged by a'pinion 205 on a flexible shaft 206 (Figs. 56 and The shafts 295 are connected tothe lower ends of the driving spindles ltl.

The driving spindles lfii (individually designated by adding exponents a to 7', Fig. have driving connections with the corresponding cams as will now be described. Referring to Fig. 11

. the spindle IEI for adjusting the dip cam llil,

carries a pinion 20? at its upper end which meshes With a pinion 208 on a horizontal shaft 209, the latter having driving connections through bevel gears 2H and 2 with a shaft 2H2 coupled to the shaft liii which has, as heretofore described, a driving connection with the cam H3. The driving spindle ltl for adjusting the cam lid, carries at its-upper end a driving pinion 2H3 which drives a gear 2M on a shaft H5 coupled to the shaft i222.

Referring to Figs. 2 and 7, the driving connections for the plunger operating earn 112 include a bevel gear 2ft on the shaft iti which aaeaeoi drives a pinion 2i? on a horizontal shaft 2H coupled to the shaft H2.

The cut-ofi' cam i3 is also driven from the spindle lei". The gearing for driving the cut-off cam includes a shaft 2l9 (Figs. 2 and 40) driven from the spindle liil bevel gear 22d on the shaft 2m, driving a bevel gear 225 on a vertical shaft 222. A bevel gear 223 on the upper end of the shaft 222 drives a gear 225 on a horizontal shaft 225 coupled to the shaft 98.

It has been found that in practice there is sometimes a tendency for the cut-off cam is (Fig. 2) to creep so that it does not accurately retain its adjusted position.' This may be due to the fact that the cam operating section 73 Referring to Figs. 2 and 9, the clamping device inciudes a clamping plate 236 anchored by a pin 288 to the cam plate ll. The free end of the clamping plate engages a groove extending lengthwise in the rack bar. A worm wheel 232 is fixed to a stud shaft 233 which has a screwthreaded connection with the clamping plate so that when the worm wheel is rotated the plate is drawn down into clamping engagement with the rack bar. The worm wheel 232 is driven by a worm 232 on a shaft 23%. The latter is driven from the spindle it through a train of gearing including a bevel gear 235 (Figs. 2 and 40) on the spindle and running in mesh with a gear 236 on one end ofa horizontal shaft 23?, the latter having driving connections through bevel pinions 23B and 239 with a shaft 2%. The latter has driving connections through a clutch mechanism 268 with the shaft 236.

The clutch mechanism (Figs. 2, 50 and 52) includes a driving clutch member 262 and a driven member 263. The clutch member 262 has a fixed ;connection with the shaft 2%. The driven clutch member 263 is splined on a sleeve 2%, the latter keyed to a driven shaft 265 in alignment with the shaft 268. Coil springs 2% held under compression between the clutch member 253 and a disk 26? on the sleeve Zdil, hold the clutch member 2 33 with a yielding pressureagainst the member M2. The shaft 245 is coupled to the shaft 236 which, as beforepointed out, has a driving connection with the rack bar 92 for adjusting the cut-off cam l3. H

Associated with the clutch mechanism 2M is. an electric control device actuated by the clutch and included in control circuits of the motor I622. The purpose of such electrical control means is to insure the release of the clamp for the cut-off cam 33 before operation of the spindle [6| which adjusts the cam. Such control mechanism (Figs. 50 and 51) includes a multiple switch 253 comprising contact bars or plates 248, 2&9,v 250 and BM, carried on a stem 252 mounted for up and down movement in a switch box 253. When the stem 252 is in its lowered position the bars 2 18, 2d? and 250 bridge pairs of stationary contacts within said casing. When the switch is moved upward, the upper contact bar 25l bridges another pair of contacts.

The operation of the clamp for thecut-off cam is as follows: When the spindle iSi has been selected and operatively connected to the motor 

